Van Lang, Tran, and Nguyen Phu Vinh. “SOLVING THE CLASS OF NONLINEAR BOUNDARY VALUE PROBLEMS BY FINITE ELEMENT METHOD”. VNUHCM Journal of Science and Technology Development 5, no. 1&2 (February 28, 2002): 36-45. Accessed June 1, 2025. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3400.